OXM does, however, express their concern that New Vegas isn't developed by the original devs (Bethesda).

Clearly, you have a responsibility to push the series forward, but there's also nothing worse than a misguided attempt to differentiate a folow-up that only ruins what everyone loved about the original. Throw in a new developer - New Vegas is being developed by Obsidian rather than Bethesda's in-house team - and there is no doubt that a fair few Fallout fans will be more than a little concerned that this could be a recipe for nuclear disaster.